5870, Fan speed and Temp

[iThinman]

I am curious how others have the fan set on their 5870's.

If I leave it at Auto, the fan runs at about 20% and my chip temp has hit as high as 87* (C) at load. Setting to manual and bumping the fan to 50% drops my at load temp to ~67* (C), but 50% fan on these is fairly noisy and 30% seems to be a sweet spot I can tollerate. Room temp is running around 73-75* (F)

Are you running auto or manual?
What are your idle/load temps?
Do you overclock?
If so, do you have idle/load temps for baseline and overclock?

[iThinman]

Another question I have is...

...how badly did I shoot myself in the foot by going CrossFire 5870's with an i5 and it's bus limitation of 2*x8?

:(

[Abram]

I leave my overdrive on and fan speed to manual. Then i use MSI afterbirner for a custom fanspeed/temperature curve. I'm not sure how high the temp has reached, but i have MSi set to push the fan to 80% when it gets above 80c, and it hasn't happened yet. I haven't really tried overclocking, but i likely will when i get it into the new case and a new layer of AC5 on it. It's a little cramped in my Centurion 5 case.

And get my PSU, which I'm still wating on. :evil:

[Paradigm Shifter]

Another question I have is...

...how badly did I shoot myself in the foot by going CrossFire 5870's with an i5 and it's bus limitation of 2*x8?

:(

Not very badly. 3 or 4% at most performance impact. It's really not until PCI-E 4x that you really see heavy bus limitation happening. TechPowerUp! tested it out when the 5870 was first released.

[iThinman]

[quote]Another question I have is...

...how badly did I shoot myself in the foot by going CrossFire 5870's with an i5 and it's bus limitation of 2*x8?

:(

Not very badly. 3 or 4% at most performance impact. It's really not until PCI-E 4x that you really see heavy bus limitation happening. TechPowerUp! tested it out when the 5870 was first released.

Oh, cool, I can live with that. Thanks

I ended up taking a dip into OC as well. Not sure how I did, but it looks good. :)



The 5870's are running at 890/1290, fan manual at 40% and topping out at 79* Sounds about right?

[Paradigm Shifter]

Not sure about the 5870 temps, but that overclock looks nice. Why no core voltage reporting in CPUz? :? So what Vcore are you using? 60*C looks very good. :D

[iThinman]

Vcore is at 1.27. Yeah, strange it isn't reporting there, first time I've used that utility, so not sure :cry:

Has been fine so far, but I still need to crank up the heater in the room today and test it more. It gets fairly stuffy in the room during summer.

[Yui]

check this out

http://www.tomshardware.com/reviews/p55-pci-express-scaling,2517.html